<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <div id="app">
      <div v-for="(floor, index1) in floors">
        <h5>
          {{ floor.title }}
        </h5>
        <ul>
          <li v-for="(item, index2) in floor.items">
            <h6>
              {{item.name}}
            </h6>
            <p>
              {{item.price}}
            </p>
          </li>
        </ul>
      </div>
  </div>
  <script src="./vue.js"></script>
  <script>
    const vm = new Vue({
      el: '#app',
      data: {
        floors: [
          {
            title: '手机',
            items: [
              {
                name: '手机1',
                price: 10
              },
              {
                name: '手机2',
                price: 20
              },
              {
                name: '手机3',
                price: 30
              }
            ]
          },
          {
            title: '电脑',
            items: [
              {
                name: '电脑1',
                price: 10
              },
              {
                name: '电脑2',
                price: 20
              },
              {
                name: '电脑3',
                price: 30
              }
            ]
          },
          {
            title: '家电',
            items: [
              {
                name: '家电1',
                price: 10
              },
              {
                name: '家电2',
                price: 20
              },
              {
                name: '家电3',
                price: 30
              }
            ]
          }
        ]
      }
    })
  </script>
</body>
</html>